package com.atguigu.lease.web.admin.service.impl;

import com.atguigu.lease.common.constants.RedisConstant;
import com.atguigu.lease.common.exceptions.LeaseException;
import com.atguigu.lease.common.result.ResultCodeEnum;
import com.atguigu.lease.common.utils.JwtUtil;
import com.atguigu.lease.model.entity.SystemUser;
import com.atguigu.lease.model.enums.BaseStatus;
import com.atguigu.lease.web.admin.service.LoginService;
import com.atguigu.lease.web.admin.service.SystemUserService;
import com.atguigu.lease.web.admin.vo.login.CaptchaVo;
import com.atguigu.lease.web.admin.vo.login.LoginVo;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.conditions.update.LambdaUpdateWrapper;
import com.wf.captcha.SpecCaptcha;
import com.wf.captcha.base.Captcha;
import org.apache.commons.codec.digest.DigestUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Service;
import org.springframework.util.ObjectUtils;
import org.springframework.util.StringUtils;
import java.util.UUID;
import java.util.concurrent.TimeUnit;


@Service
public class LoginServiceImpl implements LoginService {

    @Autowired
    private RedisTemplate<String, Object> redisTemplate;

    @Autowired
    private SystemUserService systemUserService;

    @Override
    public CaptchaVo getCaptcha() {
        //生成验证码图片和验证码
        SpecCaptcha specCaptcha = new SpecCaptcha(130,48,4);
        specCaptcha.setCharType(Captcha.TYPE_DEFAULT);
        //将验证码储存到Redis中
        String code = specCaptcha.text().toLowerCase();
        String key =RedisConstant.ADMIN_LOGIN_PREFIX +  UUID.randomUUID().toString();
        redisTemplate.opsForValue().set(key,code,RedisConstant.ADMIN_LOGIN_CAPTCHA_TTL_SEC, TimeUnit.SECONDS);
        //将key和value储存到vo返回验证码图片和验证码
        String image = specCaptcha.toBase64();  //1234
        CaptchaVo captchaVo = new CaptchaVo(image,key);

        return captchaVo;
    }

    @Override
    public String login(LoginVo loginVo) {
        //验证码是否为空
        if (ObjectUtils.isEmpty(loginVo.getCaptchaCode())){
            throw  new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_NOT_FOUND);
        }
        //根据key判断Redis验证码是否过期
        String redisCaptchaCode = (String) redisTemplate.opsForValue().get(loginVo.getCaptchaKey());
        if (ObjectUtils.isEmpty(redisCaptchaCode)){
            throw  new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_EXPIRED);
        }
        //进行对比，相等的话继续
        if (!redisCaptchaCode.equalsIgnoreCase(loginVo.getCaptchaCode())){
            throw  new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_ERROR);
        }
        //根据账号进行查询，不为空继续
        LambdaQueryWrapper<SystemUser> lambdaQueryWrapper = new LambdaQueryWrapper<>();
        lambdaQueryWrapper.eq(SystemUser::getUsername,loginVo.getUsername());
        SystemUser systemUser = systemUserService.getOne(lambdaQueryWrapper);
        if (systemUser == null){
            throw  new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_NOT_EXIST_ERROR);
        }
        //对比密码
        if (!systemUser.getPassword().equals(DigestUtils.md5Hex(loginVo.getPassword()))){
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_ERROR);
        }
        //检查账号是否禁用
        if (systemUser.getStatus() == BaseStatus.DISABLE){
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_DISABLED_ERROR);
        }
        //jwt的工具类生成token返回
        String token = JwtUtil.createToken(systemUser.getId(), systemUser.getUsername());
        return token;


    }
}
